A pure and crystal-clear analog delay with Maxon BBD IC (MC4107D). AD9Pro features up to 450mSec delay time with 4 pieces of MC4107D. With the world's first RMS level sensor and companding noise reduction system, transparent analog delay sound is finally available in a stompbox format.

Single Head/Dual Head Mode is switchable with newly added tape echo multi-head simulation function. In Dual Head Mode, midstream delay signal (which is taken from the middle of BBD delay circuit) is added into normal delay signal. This feature provides extensive delay effects such as tape echo multi-head simulation and ambience effect of a concert hall.

True Bypass Switching on both outputs with 4PDT mechanical switch. No alteration to tone of dry signal when effect is bypassed.